\begin{table}[H]

\caption{\label{tab:tab:ghanem}Sample Internal Validity Test for Primary Outcomes}
\centering
\resizebox{\linewidth}{!}{
\begin{threeparttable}
\begin{tabular}[t]{>{\raggedright\arraybackslash}p{7cm}llrrrrr}
\toprule
\multicolumn{1}{c}{ } & \multicolumn{2}{c}{Attrition Bias} & \multicolumn{4}{c}{Mean baseline outcome by group} & \multicolumn{1}{c}{Test of internal validity} \\
\cmidrule(l{3pt}r{3pt}){2-3} \cmidrule(l{3pt}r{3pt}){4-7} \cmidrule(l{3pt}r{3pt}){8-8}
Outcome & C & Differential & TR & CR & TA & CA & pvalue\\
\midrule
Interest in Politics & 0.96 & -0.024 (p-value = 0.125) & 2.80 & 2.84 & 2.88 & 2.93 & 0.82\\
Trust elections & 0.96 & -0.024 (p-value = 0.125) & 4.03 & 3.99 & 4.35 & 4.13 & 0.70\\
False News Exposure & 0.96 & -0.024 (p-value = 0.125) & 3.94 & 4.08 & 4.65 & 3.67 & 0.15\\
Affective Polarization & 0.96 & -0.024 (p-value = 0.125) & 3.00 & 3.04 & 4.04 & 3.60 & 0.81\\
WP:Daily time & 0.96 & -0.024 (p-value = 0.125) & 6.88 & 6.81 & 7.00 & 6.73 & 0.64\\
\bottomrule
\end{tabular}
\begin{tablenotes}
\item \textit{Note: } 
\item Column 1 reports the attrition rate for control, and Column 2 reports the differential attrition rate between treatment and control, with the corresponding p-value testing for difference in attrition between the groups (	extit\{differential attrition\}). Columns 3-6 present the mean baseline outcome for treatment respondents (TR), control respondents (CR), treatment attritters (TA), and control attritters (CA), respectively. Column 7 reports the p-value of the hypothesis test with two equality restrictions (	extit\{selective attrition\}
\end{tablenotes}
\end{threeparttable}}
\end{table}
